<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <form action="/dologin" method="post" >
        <input type="text" placeholder="1" name="1">
        <input type="text" placeholder="2" name="2">
        <input type="text" placeholder="3" name="3">
        <button>确定</button>
    </form>
</body>
</html>